text: import arrow
  
  
  def str_to_datetime(date: str):
      """Return datetime representation of the string passed as parameter."""
      return arrow.get(date).datetime
  
  
  def now():
      return arrow.now()
  
  
  def plus_hour():
      return arrow.now().shift(hours=1)
  
  
  def minus_hour():
      return arrow.now().shift(hours=-1)
  